/Engine/Source/Runtime/Engine/Public/SpeedTreeWind.h
Shader state that are set at compile time
enum EOptions { GLOBAL_WIND, GLOBAL_PRESERVE_SHAPE, BRANCH_SIMPLE_1, BRANCH_DIRECTIONAL_1, BRANCH_DIRECTIONAL_FROND_1, BRANCH_TURBULENCE_1, BRANCH_WHIP_1, BRANCH_OSC_COMPLEX_1, BRANCH_SIMPLE_2, BRANCH_DIRECTIONAL_2, BRANCH_DIRECTIONAL_FROND_2, BRANCH_TURBULENCE_2, BRANCH_WHIP_2, BRANCH_OSC_COMPLEX_2, LEAF_RIPPLE_VERTEX_NORMAL_1, LEAF_RIPPLE_COMPUTED_1, LEAF_TUMBLE_1, LEAF_TWITCH_1, LEAF_OCCLUSION_1, LEAF_RIPPLE_VERTEX_NORMAL_2, LEAF_RIPPLE_COMPUTED_2, LEAF_TUMBLE_2, LEAF_TWITCH_2, LEAF_OCCLUSION_2, FROND_RIPPLE_ONE_SIDED, FROND_RIPPLE_TWO_SIDED, FROND_RIPPLE_ADJUST_LIGHTING, ROLLING, NUM_WIND_OPTIONS, }